Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
  • A01N37/06—Unsaturated carboxylic acids or thio analogues thereof; Derivatives thereof
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
  • A01N37/02—Saturated carboxylic acids or thio analogues thereof; Derivatives thereof

Definitions

• the invention relates to a sprout inhibitor for potatoes, which substantially consists of rape oil methylester, medium- or long-chain alcohols or combinations thereof, or a composition based on rape oil methylester, medium- or long-chain alcohols or combinations thereof.
• the potatoes harvested in the fall are frequently expected to be stored through the winter and far into the coming spring at least until early potatoes are available again.
• sprout-inhibiting agents have been known for a long time.
• Known sprout inhibitors are certain ethereal oils, in particular peppermints, and also those of the "muna" plant, which is related to peppermint.
• Peppermint oils and "muna” oils are relatively expensive, so that any industrial application based only on said ethereal oils is not feasible.
• the chemical agents recently used for sprout inhibition in connection with potatoes include propham, i.e. isopropylphenyl carbamate, alone or in combination with chloropropham; however, the compound has a herbicidal effect, so that its use is not absolutely safe.
• medium-chain and long-chain alcohols in particular C 17 -C 24 -alcohols which are collected in industry. Said alcohols are frequently combined with propham and/or chloropropham when used as sprout inhibitors.
• DD-PS 209 378 also shows medium-chain alcohols of C 8 -C 14 ;
• DD-PS 205 600 shows the addition of m-chloronaphthalene, and
• DD-PS 138 731 shows a combination of higher alcohols with the main components nonanol and decanol, where WO 93/00008 shows aromatic aldehydes or alcohols or thymol or mixtures thereof.
• EP 0 287 946 A2 describes the use of an ethereal oil from a mentha type, in particular oils of Mentha piperiga L, as well as peppermint oil and oils of different types of mint.
• rape oil methylester as carrier for alcohols, namely all alcohols known from the state of the art and used for this purpose, and also with the ethereal oils known from the state of the art, or mixtures of alcohols with said ethereal oils supplies very good results with respect to sprout inhibition and inhibition of the start of rot with the potatoes, and that rape oil methylester itself, without addition, leads to very good results with respect to sprout inhibition, and to exceptionally good results with respect to rot inhibition.
• the present invention lies in the utilization of rape oil methylester as a sprout inhibitor, if need be in mixture with the known medium- and long-chain alcohols and/or ethereal oils and/or the known chemical sprout-inhibiting agents, whereby combinations of rape oil methylester, alcohol and, if need be, one of the aforementioned ethereal oils, in particular peppermint oil, are preferred in order to achieve the best results.
• rape oil methylester itself is sufficient for technical storage purposes over intermediate time periods with cooling to 6° to 8° C.
• medium- and long-chain alcohols means C 8 to >C 36 alcohols, in particular C 8 to C 14 and C 17 to C 24 alcohols, as well as C 18 to C 36 alcohols with a component of >C 36 -alcohols, as they are commercially available as Espum EGA 162, now Dehysan®.
• Espum (Dehysan) has not yet been used for sprout inhibition, so that its use alone or in the claimed mixtures is the object of the present invention as well.
• aqueous emulsion i.e., containing 15-40% by weight Espum (Dehysan) preferably 20-30% by weight.
• Well known, commercially available emulsifiers may be used in a suitable amount.
• rape oil methylester relates to the esterified fatty acids of the rape oil, which are collected upon saponification of the rape oil. This is a commercial product that is relatively inexpensive and readily available.
• rape oil not only relates to rape oil with a rather high content of erucic acid, but includes the oil of the varieties of rape grown at the present time, the so-called double-zero rape varieties, where both the erucic acid and the glycosinolate contents are ⁇ 1%, and which have only about 0.5% instead of about 48% erucic acid; about 63% as compared to 15% oleic acid; and about 20% linoleic acid instead of 13.5%. However, it comprises about the same percentages of linolenic acid, eicosenic acid, palmitic acid, hexadeceic acid and docosadienic acid.
• Rape oil methylesters are safe in terms of health, and, when used as sprout inhibitors or as the basis of the sprout inhibitors, do not damage the potatoes. Additionally, no relevant change occur, for example, in the nitrate content, in the content of reduced sugars and disaccharides, and in the other properties relevant to potatoes.
• the potatoes treated with said oils showed in the sensorial test conducted after 19 weeks of storage, typical potato flavor, no foreign flavor, or foreign odor, and exhibited good, solid appearance without any noticeable changes in color.
• Rape oil methylester can be easily sprayed such as by a liquid atomization (in particular swingfog) with or without the addition of known sprout-inhibiting agents, including the chemical ones.
• the spray mist deposits on and between the potatoes with greater layer thickness and exhibits an adequate effect in the mass of the stored potato. It may however also be used in the form of an aqueous emulsion, using well known commerical emulsifiers in a suitable amount.
• the amount of rape oil methylester, long-chain alcohols, or combinations thereof lone, or in combination with other active ingredients, which is applied comes to about 50 ml to 100 ml/ton, which is very little, considering the fact that the commercial formulas, which consist of higher alcohols and propham with silicic acid filler, dinitrosopentamethylene tetramine, PVC-powder and kaolin, are used in an amount of about 220 g/ton, and about 40 g/ton is used when chloropropham is utilized alone. Contrast this to ethereal oils which are used in an amount of about 50 ml/50 kg with a storage duration of 100 days and more, an amount of standard time in the industry.
• the rape oil or the preparation based on rape oil was distributed over and onto the stored potatoes by liquid atomization (swingfog).
• composition of the sprout inhibitor used in the specified amount was as follows:
• active substance means alcohol+peppermint, thus the component used in addition to rape oil methylester.
• the samples were treated with the following substances:
• the samples of tests 1, 2 and 3 did not show any significant sensorial differences compared to the untreated fresh potatoes.
• the potatoes of test 4 did not show any foreign flavor; however, they wrinkled during storage and were slightly more watery immediately after peeling.
• This example shows the use of rape oil methyl ester alone and in combination with alcohol and pepper mint oil.
• the potatoes which were used in each of tests 1 to 5 in an amount of 40 kg, and in an amount of 20 kg in comparative test 6, were stored over 9 weeks at 6° to 8° C.
• composition of the sprout inhibitor and the quantities used were as shown on table 4.
• active substance means alcohol+peppermint oil and, therefore, is the component used in addition rape oil methylester.
• the amount used was 50 ml/t in each case.
• the alcohol was used as an aqueous emulsion containing 25% by weight of the alcohol with a commerically available fatty alcohol polyglycol ether sulfate as an emulsifier in an amount of about 1 g/l emulsion.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Dentistry (AREA)
• General Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Preparation Of Fruits And Vegetables (AREA)
• Medicines Containing Plant Substances (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Pretreatment Of Seeds And Plants (AREA)
• Fats And Perfumes (AREA)
• Storage Of Fruits Or Vegetables (AREA)

Applications Claiming Priority (2)

Publications (1)

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Cited By (13)

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Citations (6)

Family Cites Families (4)

• 1993
  • 1993-06-04 DE DE4318673A patent/DE4318673C2/de not_active Expired - Fee Related
• 1994
  • 1994-06-03 AT AT94918387T patent/ATE185239T1/de not_active IP Right Cessation
  • 1994-06-03 KR KR1019950700405A patent/KR950702794A/ko not_active Application Discontinuation
  • 1994-06-03 US US08/253,639 patent/US5580596A/en not_active Expired - Fee Related
  • 1994-06-03 EP EP19940918387 patent/EP0653912B1/en not_active Expired - Lifetime
  • 1994-06-03 CZ CZ1995223A patent/CZ288394B6/cs not_active IP Right Cessation
  • 1994-06-03 PL PL94309296A patent/PL174971B1/pl not_active IP Right Cessation
  • 1994-06-03 DK DK94918387T patent/DK0653912T3/da active
  • 1994-06-03 DE DE69421041T patent/DE69421041T2/de not_active Expired - Lifetime
  • 1994-06-03 WO PCT/EP1994/001821 patent/WO1994028716A2/en active IP Right Grant
  • 1994-06-03 SK SK137-95A patent/SK13795A3/sk unknown
  • 1994-06-03 JP JP50129495A patent/JP3148812B2/ja not_active Expired - Fee Related
  • 1994-06-03 ES ES94918387T patent/ES2139745T3/es not_active Expired - Lifetime
• 1995
  • 1995-02-01 FI FI950443A patent/FI950443A/fi unknown
• 1999
  • 1999-12-29 GR GR990403378T patent/GR3032287T3/el unknown

Patent Citations (6)

Non-Patent Citations (4)

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